diff options
| -rw-r--r-- | doc/user.xml | 26 |
1 files changed, 24 insertions, 2 deletions
diff --git a/doc/user.xml b/doc/user.xml index bdcd39287..90d1baa4f 100644 --- a/doc/user.xml +++ b/doc/user.xml @@ -647,8 +647,10 @@ systemctl start mpd.socket</programlisting> linkend="pulse_output">PulseAudio</link>), the software mixer, the "null" mixer (<parameter>null</parameter>; allows setting the - volume, but with no effect) or no mixer - (<parameter>none</parameter>). By default, the + volume, but with no effect; this can be used as a + trick to implement an <link + linkend="external_mixer">external mixer</link>) or no + mixer (<parameter>none</parameter>). By default, the hardware mixer is used for devices which support it, and none for the others. </entry> @@ -1420,6 +1422,26 @@ buffer_size: 16384</programlisting> </section> </chapter> + <chapter id="client_hacks"> + <title>Client Hacks</title> + + <section id="external_mixer"> + <title>External Mixer</title> + + <para> + The setting '<varname>mixer_type</varname> + "<parameter>null</parameter>"' asks + <application>MPD</application> to pretend that there is a + mixer, but not actually do something. This allows you to + implement a <application>MPD</application> client which + listens for <varname>mixer</varname> events, queries the + current (fake) volume, and uses it to program an external + mixer. For example, your client can forward this setting to + your amplifier. + </para> + </section> + </chapter> + <chapter id="plugin_reference"> <title>Plugin reference</title> |